The department store has two locations in the city. From 2004 through 2008, profits for each of store's two branches are modeled by functions f(x)=-0.44x+13.62 and g(x)=0.51x+11.14. in every model, x reperesents number of years after 2004, and f and g represent profit, in millions of dollars.
a) Determine the slope of f? Explain what this means
b) Find the slope of g? Explain what it means
c) f+g Determine the slope of this function? Explain what the slope mean.